PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-15:28:10
G01     91.3           31.6                9.6 +/-    1.17      16.4 +/-    1.17  0.070 / 0.130
G07     124.7          46.5               10.7 +/-    0.93      14.2 +/-    0.93  0.090 / 0.120
G11     69.4           40.0                9.3 +/-    0.78      13.5 +/-    0.78  0.030 / 0.020
G13     295.5          35.8               10.1 +/-    2.93      15.8 +/-    2.93  0.020 / 0.030
G17     213.9          52.1               11.2 +/-    1.15      13.8 +/-    1.15  0.070 / 0.170
G18     64.6           24.0                8.5 +/-    1.93      17.0 +/-    1.93  0.070 / 0.130
G19     214.4          23.7               10.8 +/-    2.27      21.8 +/-    2.27  0.070 / 0.100
G28     347.1          61.8                8.5 +/-    0.72       9.5 +/-    0.72  0.080 / 0.080
G30     99.3           77.3               10.7 +/-    0.32      10.9 +/-    0.32  0.040 / 0.040